Central neck lymph node metastasis in oral squamous cell carcinoma at the floor of mouth

BMC Cancer

Table 2 Pathologic data of the 13 patients with level VI metastasis

Number	pT	PNI^a	LVI^b	Pathologic status of lymph node						ENE^c
Number	pT	PNI^a	LVI^b	I	II	III	IV	V	VI	ENE^c
1	4	+	+	+	+	+	+	+	+	+
2	3	–	+	+	+	+	–	–	+	+
3	3	+	+	+	–	+	+	–	+	+
4	4	–	–	+	+	–	+	–	+	+
5	4	+	+	+	+	+	+	–	+	+
6	3	–	–	+	–	+	+	–	+	+
7	4	–	–	+	+	+	–	–	+	+
8	3	+	+	+	+	+	–	–	+	+
9	4	–	+	+	+	–	+	–	+	+
10	4	+	+	+	+	–	+	–	+	+
11	3	–	–	+	+	–	+	–	+	+
12	4	+	+	+	+	+	–	–	+	+
13	4	–	+	+	+	+	–	–	+	+

^a PNI perineural invasion, ^b LVI lymphovascular invasion, ^c ENE extranodal extension

ISSN: 1471-2407